Patent US4437896A successfully refreshed from Google Patents.
US4437896A
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Synthetic asphalt mixtures and processes for making them
Assignee: Individual
•
Filing: 1983-02-08
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Granted: 1984-03-20
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Expires: 2003-02-08
Abstract
Abstract Synthetic asphalt mixtures comprise selective blends of tall oil and/or tall oil pitch and naturally occurring or man-made gilsonite.
Inventors
- 👤 John F. Partanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:25
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
15 words
A synthetic asphalt composition, consisting of a mixture of gilsonite and a tall oil product.
Claim 2
Dependent Claim
15 words
A synthetic asphalt composition, consisting of a mixture of gilsonite and a tall oil product.
Claim 3
Dependent Claim
15 words
The composition of claim 1 in which the tall oil product comprises tall oil pitch.
Claim 4
Dependent Claim
14 words
The composition of claim 1 in which the tall oil product comprises tall oil.
Claim 5
Dependent Claim
21 words
The composition of claim 1 in which the tall oil product comprises a mixture of tall oil and tall oil pitch.
Claim 6
Dependent Claim
38 words
A modified synthetic asphalt composition consisting of a mixture of gilsonite, a tall oil product, and additive material for modifying the composition to provide desired properties selected from the group consisting of aggregate, petroleum asphalt, and reclaimed rubber.
Claim 7
Dependent Claim
15 words
The composition of claim 5 in which the tall oil product comprises tall oil pitch.
Claim 8
Dependent Claim
14 words
The composition of claim 6 which includes a further additive comprising an emulsifying agent.
Claim 9
Dependent Claim
18 words
A modified synthetic asphalt composition consisting of a mixture of gilsonite, a tall oil product, and an alcohol.
Claim 10
Dependent Claim
18 words
A modified synthetic asphalt composition consisting of a mixture of gilsonite, a tall oil product, and an alcohol.
Claim 11
Dependent Claim
8 words
The composition of claim 8 which includes aggregate.
Claim 12
Dependent Claim
9 words
The composition of claim 8 which includes fibre binder.
Claim 13
Dependent Claim
12 words
The composition of claim 8 in which the alcohol includes monohydric alcohols.
Claim 14
Dependent Claim
14 words
The composition of claims 8 or 11 in which the alcohol includes polyhydric alcohols.
Claim 15
Dependent Claim
27 words
An asphalt recycling composition consisting of a mixture of tall oil pitch and additive material selected from a group consisting of tall oil, gilsonite, and petroleum asphalt.
Claim 16
Dependent Claim
27 words
An asphalt recycling composition consisting of a mixture of tall oil pitch and additive material selected from a group consisting of tall oil, gilsonite, and petroleum asphalt.
Claim 17
Dependent Claim
14 words
The composition of claim 12 which includes a further additive comprising an emulsifying agent.
Claim 18
Dependent Claim
14 words
The composition of claim 12 or 13 which includes a further additive comprising aggregate.
Claim 19
Dependent Claim
17 words
The process of preparing synthetic asphalt, consisting of the step of mixing gilsonite and tall oil pitch.
Claim 20
Dependent Claim
17 words
The process of preparing synthetic asphalt, consisting of the step of mixing gilsonite and tall oil pitch.
Claim 21
Dependent Claim
19 words
The process of claim 16 which includes the step of agitating the mixture of gilsonite and tall oil pitch.
Claim 22
Dependent Claim
32 words
The process of claim 17 which further includes the step of crushing the gilsonite to a particle size of less than 850 microns prior to mixing the gilsonite and tall oil pitch.
Claim 23
Dependent Claim
35 words
The process of claim 13 which further includes the step of adding material selected from the group consisting of aggregate, petroleum asphalt, reclaimed rubber, and alcohol to the mixture of gilsonite and tall oil pitch.
Claim 24
Dependent Claim
18 words
The process of claim 15 which further includes the step of adding an emulsifying agent to the mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |